Adjusting device



K 'A 'l-l. SYMONS ADJUSTING DEVICE April 22,1939.

Filed Feb. 16' 1927 Patented Apr. 22, 1930 UNiTiED SITES;

PATENT OFFICE r` ARTHUR Hf' sYMONs. lOP RIVER PORST, .ILLINoIs AssIGNOP. rro sYMoNs CLAMP sa V MPG. COMPANY7 OP ci-IIcAGofILLINOIs, .a CORPORATION or ILLINOIS l Y' ADJUSTING :DEVICE Application ala February 1e, 1927. yserial Nb. 168,505.V

Theinvention relates to k'adjusting devices Y which are more particularly adapted for shores used in the erection of buildings.

.The Objects of the invention arefto provide, an improved device'which is adapted to be 'secured' to the lower, end 'of the shoreV and Y comprises a readily Operable and adjustable `cam for shiftingthe shore to its desired poshore; an adjusting device which is'adapted tov be. attached to the lower end of the shore so that it may be unitarily handled in storing and setting up; and a shore `adjusting devicewhich is simple in construction, can be produced ata low operation. j

. The invention consists in the several novel features hereinafter set forth and more particularly dened by claims at the conclusion hereof. Y

Inthe drawing: Fig.`1' is a perspective, illustrating the invention in use. Fig. 2 is a verticalsection ofthe adjusting device. F ig, 3 is a section taken on line 3 3 of Fig. 2. Fig. 4 is-a perspective of the uppersection of the casing of the adjustingdevice. Fig. 5 is a perspective of th-e lower section. Fig.

6 is a perspective of the dog or detent for locking the cam against reverse*l rotation. Fig. 7 is a perspective of the combined cam and ratchet unit.

The invention is exemplified with a shore a provided at its top with a `T-head a', to which is secured a bar a?. The load to be carried by the shore is exemplified by boards a? of a formtfor Vavconcrete floor or other structure, which is'to be temporarily vsupported.y 'In practice, it is desirable that the shorebe adjustable vvertically to support'the floor or structure in its correct position, and /forjthis purpose, an adjusting device B is 'interposed betweenthe usual supporting barV b which rests Von afloor ory other support andthe lower end of the shore. f

The improved adjusting' device comprises a casing or box composed'of a-box-like upper Viv5o sectionxb? anda lower box-likesection b3 which are telescopically connected. The upcost, and is eiiicient inV per section comprises atop vwall 1,0 which is substantially rectangularand iits against the lower end ofthe shore a, being provided with holes for nails 11 to attach the section to the shore. YSection b2 also comprises four depending side walls 12, 13, 14 and lwhich are integrally formed with thetop wall 10. The section b3 Vcomprises a bottom wall 16 and side walls 17, 18, 19 and 20 integrally formed therewith, and formed to slide into the yupper section. To hold the casing sections in connected relation, more particularly wheny the shore is not in use, the head of a screw 21, secured in the ywall 17 rides in a'` verticalY slot 22 formed with the wall 13 of the .upper section, the lower' end of the slot servingy as a st'opto limit the separation of the sections. The device for relatively adjusting the sections to adjust the shore comprises a pair of Vsimilar cams 23 adapted to bear against curved seats or abutments 24 integrally formed with the lower'casing section and a pair of cams 25 which are adapted to engage curved seats or abutments 26 which dependV from, and are integrally formedk with,fwall 10l of the, upper casing section. All of these cams are integrally formed so they will be unitarily rotatable. -The cams 23 and 25 are oppositely arranged, so ythat they will act compoundly to relatively shift the sections. This operation of` the cams makes it possible to quickly and relatively adjust the casingsections to effect the maxi-Y mum movement in approximately a half revolution of the cam structure. This, in practice, has beenV found to provide the Adesired leverage and to make itlpossible -to'eifect the adjustment lmore-quickly than is possible with a screw action.` Walls 33 are integrally formed and extend inwardly from the walls 17 and 20 of the lower casing section so their inner ends will confine the hub portions 23a of the cam structure against lateral or trans? verse movement.

A hexagonal hole 28 is formed in the cam structure .and extends longitudinally therethrough so 4that a hexagonal bar maybe extended into the structure and turnedby a long wrench or other suitable tool, or a tool structure andt'oholdthe shore in itsadj usted position, ratchet-,teeth 2'? are integrally formed with saidstructure and extend longitudinally between the hub portions 23a of the camstructure and between -walls 33. A dog or detent 32' fits between and iscontined against transverse -niovement by the Walls 33 at one side of the-cam structure, and `is provided, at its .lowerend with an integral'tooth 34 which is adapted to bel heldin a `seat or groove 35 formedin a rib 36 integrally formed with the bottom wall' 16 of the lower casing section, a seriesof ratchet teeth 37 adapted to'be engaged by the 'teeth 2j?, and an arm 38 which Vextends Aoutwardly and terminates in a `vertical slot 39 'formed in the wall 15 of the upper casing section where it will be accessible for manual manipulation. A spring 40 is held in a socket in the detent and is adapted tobear against ythe wall 2.0 .to yieldingly hold the teeth 37 in ,engagement with the ratchet teeth 27,v to hold the cam structure against reverse rotation in its different vertical positions.VV

,In assembling the ,adjusting device, the detent maybe slipped into position with its rib 34 into the seat 35' so it will be p ivotally held, before the cam structure is placed into the casing.

InV operation, the cam structureis normally positionedy to permit the casing sections 4to telescope into each other as tar as possible. The shore member may then be placed in' its supportng position, and by applying a suitable tool and rotating the caml structure, the shore will be raised into the desired ad justment. During this rotation, cams25will ride in the seats 24 'to bodily raise the cam structure and cams 23 will engage the seats v2 6 to litt the top casing sectionre'latively to the axis ot the cam structure, thus compounding the displacement produced by the cams to obtainv the desired lift. During this rotation, tlie. dog 3 2 will lock the ratchet against Areverse rotationand thus hold y,the shore in its adjust-edi position. Nhen'it is desiredto release the shore or lower it, it is only ecessary Y to-pull'the arm of the detent upwardljnandreversely rotate the cam structure, or in someV shore will retract 'tively adjustable telescopic sections and in whichvthe' adjustmentmay be quickly el'ected bythe rotationof the cam' structure; in vwhich the entire adj ustingdevice consists essentially Y oi three cast units vwhich can be produced and assembled at a low cost; which is adapted to be secured to the lower end of a shore and does not project substantially therefrom so that it i v7ill not interfere with the convenient storing and handling oi' the shores; and in which the cam structure can be operated by a wrench cr other suitable tool.

' TheV invention is not `to be understood as restricted to the Ydetails Yset forth, since these may be modified within the scope of the ap- ,pended'fclaims without departing from the spirit and scope of theinvention.

Having `thus described the invention, what I claim kas new and desire to secure by Letters Patent, is: j Y Y 1. The combination with ashore, of anadjustingdevice composed or' slidably connected telescoping'sections, oneof which is' adapted to engage the lower end 4ofthe shore, a .pair

ot oppositely arranged Yrotatable integral cams, abutments on the sections respectively engaged by the cams, a ratchet-wheel rigid with the cams and a dog to engage the ratchet and lock the cams against'Y reverse rotation said dog 4being enclosed by the sections and having an extension projecting through slot-s in said sections wherebyV it may be manipulated out ot engagement with the ratchetwheel. Y

2. An adjustingdevice for a shore, comprising a pair o telescoping boX-lilie sections, one of which is adapted to act against Athe lowerend 'of `the shore, said sections being formed so that the interiors thereof together form a chambeija cam disposed in the chamber and adaptedi when rotated` in one direction to force thesections apart to adjust the shore, and means also disposed in said chamberV for ,releasably locking the cam against lreverSe rotation.

3. A n adjusting device for a shore comprising a pair of box-like sections, one of which has a top wall secured iXedly to the lower end 'of the shore, the otherv section telescoping into the said one section and forming therewith a chamber, a cam disposed in the chamber and adapted when rotated in one' direction to, force the sections apart Vto adjust the shore, and means also disposed e 1n saidV chamber for releasably locking the cam against reverse rotationf Y 4. An adjusting device fora shore. comprising a pair of slidably and telescopically l.

connected box-like sections, two integral cams at the sides of thesections adapted when rotated in one direction to force the sections apart to adjust the shore, abutments integral with the sections for the cams respectively, and releasable means for preventing reverse rotation of the cams. v

5, In combination with a shore, an adjusting devicey composed of a pair of telescoping'box-likesections, one of which is one direction to force the sections apart rto,

adjustthe shore, lsaid cams being rigidly secured together andpositioned in side byside relation, and means alsol disposed in said chamber for releasably locking v the cams against reverse rotation;

G. An adjusting device prising a pair of slidably'and telescopically connected boXlile sections, twopairs of in'- -tegral oppositely disposed cams adjacent the sides of the sections, said cams being adapted when rotated in one direction to force the box-like sections, one of which has the top members apart to adjust the shore, abutments for the cams respectively, and releasable means for preventing reverse rotation of the cams. ,v

7. In combination with a shore, an adjusting deviceconiposed of a pair of telescoping box-like sections, one of which has a top wall secured fiXedly to theV lower end of the shore, said top wall being provided with an integral depending thickened` abutment a ycam Vdisposed between the sections and engaging wall thereof secured fiXedly to the lower end ofthe shore, said top wall of the one section and the bottom wall of the other section being provided with integral relatively offset abut# ments, a pair of oppositely arranged lcams disposed between'the sections and positioned inside by side relation, said cams engaging the abutments respectively and 'being adapted when rotated in one direction toforce the sections apart to adjust thershore, and means also disposed in said chamber for releasably locking the cams against reverse rotation.

' 9. An adjusting device for a shore comprising a pair ofslidably and telescopicallyk connected box-like sections, two pairs of inj tegral oppositely disposed cams adapted when rotated in onedirection to force the f sections apart to adjust the shore; abutments j ustingdevice composed of a pair of telescop-y for a shore ,com-` of January, 1927.'

grally formed with the cams, and a dog for the teeth enclosed by the sections and pivotally held in one of the sections. i

11. ln combination with a shore, an ading box-like sections, one of which is adapted V'to be applied to the lower end of the shore,

said sections being formed so that the interiors thereof form a chamber, a cam in said chamber adapted when rotated in one direction to force the sections `apart to adjust the shore, la ratchet integral with the cam, and a releasable Vdog disposed in the chamber and pivoted t-oone of the sections, said dog being arranged to engage the ratchet and lock the cam against reverse rotation.

12. Incombination with a shore, an adjusting device composed of a pairof telescoping box-like sections, one of which is adapted to be applied to the lower end of the shore, said thereof form a chamber, acam in said chamber adapted when rotated in one direction to force the sections apart to adjust the shore, a ratchet integral with the cam, and a releasable dog disposed in the chamber and piv-v oted removably to one of the sections, said dog being arranged to engage the ratchet and l lock the cam against reverse rotation. j v

13. An adjusting device for ashore comprising a pair of slidably and telescopically I connected box-like sections, two pairs of oppositely disposed rotatable and bodily movable cams enclosed by the sections, abutments on the sections for the cams respectively, ratchet-teethrigid with the cams, and aV dogV ico pivotally held in one of the sections, the cams 'Y i i having a socket for the application of a turning device, the sections being slotted for the Y movement of said device.

Signed at Chicago, Illinois, this 26th day ARTHUR I-I. SYMONS.

integral with the sections, for the cams re- Y spectively, and releasable means between the V pairs of cams for preventing reverse rotation :connected sections, twov pairs of integral oppositely disposed cams enclosed by the sections, abutments integral with the sections for the cams respectively, ratchet teeth inte- 85 sections being formed so that the interiors Y 

